2011 rail leak.

I'm really getting frustrated at this point with my brothers marker. Every time we go to play he has issues with it. Anyways, its leaking down the barrel after one shot. All the o rings look good. It's lubed fine. And another question. He lost his oring kit. Where can I get another one.

This has nothing to do with responsibility. It's my brother's gun. If anything I'm taking responsibility by fixing my kid brothers gun. And all the protos I've had were pieces of shit. So I'm glad you've had good experiences with them. No offense at all. I'm just frustrated to even have this many problems with one marker. It's issue after issue with this thing.